JS----常用方法函数集

字符串长度截取function cutstr(str, len) {    var temp,        icount = 0,        patrn = /[^\x00-\xff]/，        strre = "";    for (var i = 0; i < str.length; i++) {        if (icount < len - 1) {            temp = str.substr(i, 1);                if (patrn.exec(temp) == null) {                   icount = icount + 1            } else {                icount = icount + 2            }            strre += temp            } else {            break;        }    }    return strre + "..."}

替换全部String.prototype.replaceAll = function(s1, s2) {    return this.replace(new RegExp(s1, "gm"), s2)}

清除空格String.prototype.trim = function() {    var reExtraSpace = /^\s*(.*?)\s+$/;    return this.replace(reExtraSpace, "$1")}

清除左空格/右空格function ltrim(s){ return s.replace( /^(\s*|　*)/, ""); } function rtrim(s){ return s.replace( /(\s*|　*)$/, ""); }

判断是否以某个字符串开头String.prototype.startWith = function (s) {    return this.indexOf(s) == 0}

判断是否以某个字符串结束String.prototype.endWith = function (s) {    var d = this.length - s.length;    return (d >= 0 && this.lastIndexOf(s) == d)}

转义html标签function HtmlEncode(text) {    return text.replace(/&/g, '&').replace(/\"/g, '"').replace(/</g, '<').replace(/>/g, '>')}

时间日期格式转换Date.prototype.Format = function(formatStr) {    var str = formatStr;    var Week = ['日', '一', '二', '三', '四', '五', '六'];    str = str.replace(/yyyy|YYYY/, this.getFullYear());    str = str.replace(/yy|YY/, (this.getYear() % 100) > 9 ? (this.getYear() % 100).toString() : '0' + (this.getYear() % 100));    str = str.replace(/MM/, (this.getMonth() + 1) > 9 ? (this.getMonth() + 1).toString() : '0' + (this.getMonth() + 1));    str = str.replace(/M/g, (this.getMonth() + 1));    str = str.replace(/w|W/g, Week[this.getDay()]);    str = str.replace(/dd|DD/, this.getDate() > 9 ? this.getDate().toString() : '0' + this.getDate());    str = str.replace(/d|D/g, this.getDate());    str = str.replace(/hh|HH/, this.getHours() > 9 ? this.getHours().toString() : '0' + this.getHours());    str = str.replace(/h|H/g, this.getHours());    str = str.replace(/mm/, this.getMinutes() > 9 ? this.getMinutes().toString() : '0' + this.getMinutes());    str = str.replace(/m/g, this.getMinutes());    str = str.replace(/ss|SS/, this.getSeconds() > 9 ? this.getSeconds().toString() : '0' + this.getSeconds());    str = str.replace(/s|S/g, this.getSeconds());    return str}

判断是否为数字类型function isDigit(value) {    var patrn = /^[0-9]*$/;    if (patrn.exec(value) == null || value == "") {        return false    } else {        return true    }}

设置cookie值function setCookie(name, value, Hours) {    var d = new Date();    var offset = 8;    var utc = d.getTime() + (d.getTimezoneOffset() * 60000);    var nd = utc + (3600000 * offset);    var exp = new Date(nd);    exp.setTime(exp.getTime() + Hours * 60 * 60 * 1000);    document.cookie = name + "=" + escape(value) + ";path=/;expires=" + exp.toGMTString() + ";domain=360doc.com;"}

获取cookie值function getCookie(name) {    var arr = document.cookie.match(new RegExp("(^| )" + name + "=([^;]*)(;|$)"));    if (arr != null) return unescape(arr[2]);    return null}

加入收藏夹function AddFavorite(sURL, sTitle) {    try {        window.external.addFavorite(sURL, sTitle)    } catch(e) {        try {            window.sidebar.addPanel(sTitle, sURL, "")        } catch(e) {            alert("加入收藏失败，请使用Ctrl+D进行添加")        }    }}

设为首页function setHomepage() {    if (document.all) {        document.body.style.behavior = 'url(#default#homepage)';        document.body.setHomePage('http://w3cboy.com')    } else if (window.sidebar) {        if (window.netscape) {            try {                netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect")            } catch(e) {                alert("该操作被浏览器拒绝，如果想启用该功能，请在地址栏内输入 about:config,然后将项 signed.applets.codebase_principal_support 值该为true")                }        }        var prefs = Components.classes['@mozilla.org/preferences-service;1'].getService(Components.interfaces.nsIPrefBranch);        prefs.setCharPref('browser.startup.homepage', 'http://w3cboy.com')    }}

加载样式文件function LoadStyle(url) {    try {        document.createStyleSheet(url)    } catch(e) {        var cssLink = document.createElement('link');        cssLink.rel = 'stylesheet';        cssLink.type = 'text/css';        cssLink.href = url;        var head = document.getElementsByTagName('head')[0];        head.appendChild(cssLink)    }}

返回脚本内容function evalscript(s) {    if(s.indexOf('<script') == -1) return s;    var p = /<script[^\>]*?>([^\x00]*?)<\/script>/ig;    var arr = [];    while(arr = p.exec(s)) {        var p1 = /<script[^\>]*?src=\"([^\>]*?)\"[^\>]*?(reload=\"1\")?(?:charset=\"([\w\-]+?)\")?><\/script>/i;        var arr1 = [];        arr1 = p1.exec(arr[0]);        if(arr1) {            appendscript(arr1[1], '', arr1[2], arr1[3]);        } else {            p1 = /<script(.*?)>([^\x00]+?)<\/script>/i;            arr1 = p1.exec(arr[0]);            appendscript('', arr1[2], arr1[1].indexOf('reload=') != -1);        }    }    return s;}

清除脚本内容function stripscript(s) {    return s.replace(/<script.*?>.*?<\/script>/ig, '');}

动态加载脚本文件function appendscript(src, text, reload, charset) {    var id = hash(src + text);    if(!reload && in_array(id, evalscripts)) return;    if(reload && $(id)) {        $(id).parentNode.removeChild($(id));    }    evalscripts.push(id);    var scriptNode = document.createElement("script");    scriptNode.type = "text/javascript";    scriptNode.id = id;    scriptNode.charset = charset ? charset : (BROWSER.firefox ? document.characterSet : document.charset);    try {        if(src) {            scriptNode.src = src;            scriptNode.onloadDone = false;            scriptNode.onload = function () {                scriptNode.onloadDone = true;                JSLOADED[src] = 1;             };             scriptNode.onreadystatechange = function () {                 if((scriptNode.readyState == 'loaded' || scriptNode.readyState == 'complete') && !scriptNode.onloadDone) {                    scriptNode.onloadDone = true;                    JSLOADED[src] = 1;                }             };        } else if(text){            scriptNode.text = text;        }        document.getElementsByTagName('head')[0].appendChild(scriptNode);    } catch(e) {}}

返回按ID检索的元素对象function $(id) {    return !id ? null : document.getElementById(id);}

跨浏览器绑定事件function addEventSamp(obj,evt,fn){     if(!oTarget){return;}    if (obj.addEventListener) {         obj.addEventListener(evt, fn, false);     }else if(obj.attachEvent){         obj.attachEvent('on'+evt,fn);     }else{        oTarget["on" + sEvtType] = fn;    } }跨浏览器删除事件function delEvt(obj,evt,fn){    if(!obj){return;}    if(obj.addEventListener){        obj.addEventListener(evt,fn,false);    }else if(oTarget.attachEvent){        obj.attachEvent("on" + evt,fn);    }else{        obj["on" + evt] = fn;    }}

为元素添加on方法Element.prototype.on = Element.prototype.addEventListener;NodeList.prototype.on = function (event, fn) {、    []['forEach'].call(this, function (el) {        el.on(event, fn);    });    return this;};为元素添加trigger方法Element.prototype.trigger = function (type, data) {    var event = document.createEvent('HTMLEvents');    event.initEvent(type, true, true);    event.data = data || {};    event.eventName = type;    event.target = this;    this.dispatchEvent(event);    return this;};NodeList.prototype.trigger = function (event) {    []['forEach'].call(this, function (el) {        el['trigger'](event);    });    return this;};

检验URL链接是否有效function getUrlState(URL){     var xmlhttp = new ActiveXObject("microsoft.xmlhttp");     xmlhttp.Open("GET",URL, false);      try{              xmlhttp.Send();     }catch(e){    }finally{         var result = xmlhttp.responseText;         if(result){            if(xmlhttp.Status==200){                 return(true);              }else{                    return(false);              }          }else{              return(false);          }     }}

格式化CSS样式代码function formatCss(s){//格式化代码    s = s.replace(/\s*([\{\}\:\;\,])\s*/g, "$1");    s = s.replace(/;\s*;/g, ";"); //清除连续分号    s = s.replace(/\,[\s\.\#\d]*{/g, "{");    s = s.replace(/([^\s])\{([^\s])/g, "$1 {\n\t$2");    s = s.replace(/([^\s])\}([^\n]*)/g, "$1\n}\n$2");    s = s.replace(/([^\s]);([^\s\}])/g, "$1;\n\t$2");    return s;}压缩CSS样式代码function compressCss (s) {//压缩代码    s = s.replace(/\/\*(.|\n)*?\*\//g, ""); //删除注释    s = s.replace(/\s*([\{\}\:\;\,])\s*/g, "$1");    s = s.replace(/\,[\s\.\#\d]*\{/g, "{"); //容错处理    s = s.replace(/;\s*;/g, ";"); //清除连续分号    s = s.match(/^\s*(\S+(\s+\S+)*)\s*$/); //去掉首尾空白    return (s == null) ? "" : s[1];}

获取当前路径var currentPageUrl = "";if (typeof this.href === "undefined") {    currentPageUrl = document.location.toString().toLowerCase();}else {    currentPageUrl = this.href.toString().toLowerCase();}

判断是否移动设备function isMobile(){    if (typeof this._isMobile === 'boolean'){        return this._isMobile;    }    var screenWidth = this.getScreenWidth();    var fixViewPortsExperiment = rendererModel.runningExperiments.FixViewport ||rendererModel.runningExperiments.fixviewport;    var fixViewPortsExperimentRunning = fixViewPortsExperiment && (fixViewPortsExperiment.toLowerCase() === "new");    if(!fixViewPortsExperiment){        if(!this.isAppleMobileDevice()){            screenWidth = screenWidth/window.devicePixelRatio;        }    }    var isMobileScreenSize = screenWidth < 600;    var isMobileUserAgent = false;    this._isMobile = isMobileScreenSize && this.isTouchScreen();    return this._isMobile;}

判断是否移动设备访问function isMobileUserAgent(){    return (/iphone|ipod|android.*mobile|windows.*phone|blackberry.*mobile/i.test(window.navigator.userAgent.toLowerCase()));}

判断是否苹果移动设备访问function isAppleMobileDevice(){    return (/iphone|ipod|ipad|Macintosh/i.test(navigator.userAgent.toLowerCase()));}

判断是否安卓移动设备访问function isAndroidMobileDevice(){    return (/android/i.test(navigator.userAgent.toLowerCase()));}判断是否Touch屏幕function isTouchScreen(){    return (('ontouchstart' in window) || window.DocumentTouch && document instanceof DocumentTouch);}

判断是否打开视窗function isViewportOpen() {    return !!document.getElementById('wixMobileViewport');}

获取移动设备初始化大小function getInitZoom(){    if(!this._initZoom){        var screenWidth = Math.min(screen.height, screen.width);        if(this.isAndroidMobileDevice() && !this.isNewChromeOnAndroid()){            screenWidth = screenWidth/window.devicePixelRatio;        }            this._initZoom = screenWidth /document.body.offsetWidth;        }    return this._initZoom;}

获取移动设备最大化大小function getZoom(){    var screenWidth = (Math.abs(window.orientation) === 90) ? Math.max(screen.height, screen.width) : Math.min(screen.height, screen.width);    if(this.isAndroidMobileDevice() && !this.isNewChromeOnAndroid()){        screenWidth = screenWidth/window.devicePixelRatio;    }    var FixViewPortsExperiment = rendererModel.runningExperiments.FixViewport || rendererModel.runningExperiments.fixviewport;    var FixViewPortsExperimentRunning = FixViewPortsExperiment && (FixViewPortsExperiment === "New" || FixViewPortsExperiment === "new");    if(FixViewPortsExperimentRunning){        return screenWidth / window.innerWidth;    }else{        return screenWidth / document.body.offsetWidth;    }}

获取移动设备屏幕宽度function getScreenWidth(){    var smallerSide = Math.min(screen.width, screen.height);    var fixViewPortsExperiment = rendererModel.runningExperiments.FixViewport || rendererModel.runningExperiments.fixviewport;    var fixViewPortsExperimentRunning = fixViewPortsExperiment && (fixViewPortsExperiment.toLowerCase() === "new");    if(fixViewPortsExperiment){        if(this.isAndroidMobileDevice() && !this.isNewChromeOnAndroid()){            smallerSide = smallerSide/window.devicePixelRatio;        }    }    return smallerSide;}

完美判断是否为网址function IsURL(strUrl) {    var regular = /^\b(((https?|ftp):\/\/)?[-a-z0-9]+(\.[-a-z0-9]+)*\.(?:com|edu|gov|int|mil|net|org|biz|info|name|museum|asia|coop|aero|[a-z][a-z]|((25[0-5])|(2[0-4]\d)|(1\d\d)|([1-9]\d)|\d))\b(\/[-a-z0-9_:\@&?=+,.!\/~%\$]*)?)$/i    if (regular.test(strUrl)) {        return true;    }else {        return false;    }}getElementsByClassNamefunction getElementsByClassName(name) {    var tags = document.getElementsByTagName('*') || document.all;    var els = [];    for (var i = 0; i < tags.length; i++) {        if (tags.className) {            var cs = tags.className.split(' ');            for (var j = 0; j < cs.length; j++) {                if (name == cs[j]) {                    els.push(tags);                    break                }            }        }    }    return els}

获取页面高度function getPageHeight(){    var g = document, a = g.body, f = g.documentElement, d = g.compatMode == "BackCompat"                    ? a                    : g.documentElement;    return Math.max(f.scrollHeight, a.scrollHeight, d.clientHeight);}

获取页面scrollLeftfunction getPageScrollLeft(){    var a = document;    return a.documentElement.scrollLeft || a.body.scrollLeft;}

获取页面可视宽度function getPageViewWidth(){    var d = document, a = d.compatMode == "BackCompat"                    ? d.body                    : d.documentElement;    return a.clientWidth;}

获取页面宽度function getPageWidth(){    var g = document, a = g.body, f = g.documentElement, d = g.compatMode == "BackCompat"                    ? a                    : g.documentElement;    return Math.max(f.scrollWidth, a.scrollWidth, d.clientWidth);}

获取页面scrollTopfunction getPageScrollTop(){    var a = document;    return a.documentElement.scrollTop || a.body.scrollTop;}

获取页面可视高度function getPageViewHeight() {    var d = document, a = d.compatMode == "BackCompat"                    ? d.body                    : d.documentElement;    return a.clientHeight;}

去掉url前缀function removeUrlPrefix(a){    a=a.replace(/：/g,":").replace(/．/g,".").replace(/／/g,"/");    while(trim(a).toLowerCase().indexOf("http://")==0){        a=trim(a.replace(/http:\/\//i,""));    }    return a;}

随机数时间戳function uniqueId(){    var a=Math.random,b=parseInt;    return Number(new Date()).toString()+b(10*a())+b(10*a())+b(10*a());}

全角半角转换//iCase: 0全到半，1半到全，其他不转化function chgCase(sStr,iCase){    if(typeof sStr != "string" || sStr.length <= 0 || !(iCase === 0 || iCase == 1)){        return sStr;    }    var i,oRs=[],iCode;    if(iCase){/*半->全*/        for(i=0; i<sStr.length;i+=1){             iCode = sStr.charCodeAt(i);            if(iCode == 32){                iCode = 12288;                                            }else if(iCode < 127){                iCode += 65248;            }                oRs.push(String.fromCharCode(iCode));             }                    }else{/*全->半*/        for(i=0; i<sStr.length;i+=1){             iCode = sStr.charCodeAt(i);            if(iCode == 12288){                iCode = 32;            }else if(iCode > 65280 && iCode < 65375){                iCode -= 65248;                                            }                oRs.push(String.fromCharCode(iCode));          }                    }                    return oRs.join("");                }

确认是否键盘有效输入值function checkKey(iKey){    if(iKey == 32 || iKey == 229){return true;}/*空格和异常*/    if(iKey>47 && iKey < 58){return true;}/*数字*/    if(iKey>64 && iKey < 91){return true;}/*字母*/    if(iKey>95 && iKey < 108){return true;}/*数字键盘1*/    if(iKey>108 && iKey < 112){return true;}/*数字键盘2*/    if(iKey>185 && iKey < 193){return true;}/*符号1*/    if(iKey>218 && iKey < 223){return true;}/*符号2*/    return false;}

获取网页被卷去的位置function getScrollXY() {    return document.body.scrollTop ? {        x: document.body.scrollLeft,        y: document.body.scrollTop    }: {        x: document.documentElement.scrollLeft,        y: document.documentElement.scrollTop    }}

日期格式化函数+调用方法Date.prototype.format = function(format){    var o = {        "M+" : this.getMonth()+1, //month        "d+" : this.getDate(),    //day        "h+" : this.getHours(),   //hour        "m+" : this.getMinutes(), //minute        "s+" : this.getSeconds(), //second        "q+" : Math.floor((this.getMonth()+3)/3),  //quarter        "S" : this.getMilliseconds() //millisecond    };    if(/(y+)/.test(format)) format=format.replace(RegExp.$1,(this.getFullYear()+"").substr(4 - RegExp.$1.length));    for(var k in o){        if(new RegExp("("+ k +")").test(format))            format = format.replace(RegExp.$1,RegExp.$1.length==1 ? o[k] :("00"+ o[k]).substr((""+ o[k]).length));    }    return format;}alert(new Date().format("yyyy-MM-dd hh:mm:ss"));

时间个性化输出功能/*1、< 60s, 显示为“刚刚”2、>= 1min && < 60 min, 显示与当前时间差“XX分钟前”3、>= 60min && < 1day, 显示与当前时间差“今天 XX:XX”4、>= 1day && < 1year, 显示日期“XX月XX日 XX:XX”5、>= 1year, 显示具体日期“XXXX年XX月XX日 XX:XX”*/function timeFormat(time){    var date = new Date(time),        curDate = new Date(),        year = date.getFullYear(),        month = date.getMonth() + 10,        day = date.getDate(),        hour = date.getHours(),        minute = date.getMinutes(),        curYear = curDate.getFullYear(),        curHour = curDate.getHours(),        timeStr;    if(year < curYear){        timeStr = year +'年'+ month +'月'+ day +'日 '+ hour +':'+ minute;    }else{        var pastTime = curDate - date,            pastH = pastTime/3600000;        if(pastH > curHour){              timeStr = month +'月'+ day +'日 '+ hour +':'+ minute;        }else if(pastH >= 1){              timeStr = '今天 ' + hour +':'+ minute +'分';        }else{              var pastM = curDate.getMinutes() - minute;              if(pastM > 1){                timeStr = pastM +'分钟前';              }else{                timeStr = '刚刚';              }        }    }    return timeStr;}

解决offsetX兼容性问题// 针对火狐不支持offsetX/Yfunction getOffset(e){    var target = e.target, // 当前触发的目标对象          eventCoord,          pageCoord,          offsetCoord;    // 计算当前触发元素到文档的距离    pageCoord = getPageCoord(target);    // 计算光标到文档的距离    eventCoord = {        X : window.pageXOffset + e.clientX,        Y : window.pageYOffset + e.clientY    };    // 相减获取光标到第一个定位的父元素的坐标    offsetCoord = {        X : eventCoord.X - pageCoord.X,        Y : eventCoord.Y - pageCoord.Y    };    return offsetCoord;}function getPageCoord(element){    var coord = { X : 0, Y : 0 };    // 计算从当前触发元素到根节点为止，    // 各级 offsetParent 元素的 offsetLeft 或 offsetTop 值之和    while (element){        coord.X += element.offsetLeft;        coord.Y += element.offsetTop;        element = element.offsetParent;    }    return coord;}

常用的正则表达式//正整数/^[0-9]*[1-9][0-9]*$/;//负整数/^-[0-9]*[1-9][0-9]*$/;//正浮点数/^(([0-9]+\.[0-9]*[1-9][0-9]*)|([0-9]*[1-9][0-9]*\.[0-9]+)|([0-9]*[1-9][0-9]*))$/;   //负浮点数/^(-(([0-9]+\.[0-9]*[1-9][0-9]*)|([0-9]*[1-9][0-9]*\.[0-9]+)|([0-9]*[1-9][0-9]*)))$/;  //浮点数/^(-?\d+)(\.\d+)?$/;//email地址/^[\w-]+(\.[\w-]+)*@[\w-]+(\.[\w-]+)+$/;//url地址/^[a-zA-z]+://(\w+(-\w+)*)(\.(\w+(-\w+)*))*(\?\S*)?$/;或：^http:\/\/[A-Za-z0-9]+\.[A-Za-z0-9]+[\/=\?%\-&_~`@[\]\':+!]*([^<>\"\"])*$ //年/月/日（年-月-日、年.月.日）/^(19|20)\d\d[- /.](0[1-9]|1[012])[- /.](0[1-9]|[12][0-9]|3[01])$/;//匹配中文字符/[\u4e00-\u9fa5]/;//匹配帐号是否合法(字母开头，允许5-10字节，允许字母数字下划线)/^[a-zA-Z][a-zA-Z0-9_]{4,9}$/;//匹配空白行的正则表达式/\n\s*\r/;//匹配中国邮政编码/[1-9]\d{5}(?!\d)/;//匹配身份证/\d{15}|\d{18}/;//匹配国内电话号码/(\d{3}-|\d{4}-)?(\d{8}|\d{7})?/;//匹配IP地址/((2[0-4]\d|25[0-5]|[01]?\d\d?)\.){3}(2[0-4]\d|25[0-5]|[01]?\d\d?)/;//匹配首尾空白字符的正则表达式/^\s*|\s*$/;//匹配HTML标记的正则表达式< (\S*?)[^>]*>.*?|< .*? />;//sql 语句^(select|drop|delete|create|update|insert).*$//提取信息中的网络链接(h|H)(r|R)(e|E)(f|F) *= *('|")?(\w|\\|\/|\.)+('|"| *|>)? //提取信息中的邮件地址\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)* //提取信息中的图片链接(s|S)(r|R)(c|C) *= *('|")?(\w|\\|\/|\.)+('|"| *|>)? //提取信息中的 IP 地址(\d+)\.(\d+)\.(\d+)\.(\d+)//取信息中的中国手机号码(86)*0*13\d{9} //提取信息中的中国邮政编码[1-9]{1}(\d+){5} //提取信息中的浮点数（即小数）(-?\d*)\.?\d+ //提取信息中的任何数字(-?\d*)(\.\d+)?//电话区号^0\d{2,3}$//腾讯 QQ 号^[1-9]*[1-9][0-9]*$ //帐号（字母开头，允许 5-16 字节，允许字母数字下划线）^[a-zA-Z][a-zA-Z0-9_]{4,15}$ //中文、英文、数字及下划线^[\u4e00-\u9fa5_a-zA-Z0-9]+$

返回顶部的通用方法function backTop(btnId) {    var btn = document.getElementById(btnId);    var d = document.documentElement;    var b = document.body;    window.onscroll = set;    btn.style.display = "none";    btn.onclick = function() {        btn.style.display = "none";        window.onscroll = null;        this.timer = setInterval(function() {            d.scrollTop -= Math.ceil((d.scrollTop + b.scrollTop) * 0.1);            b.scrollTop -= Math.ceil((d.scrollTop + b.scrollTop) * 0.1);            if ((d.scrollTop + b.scrollTop) == 0) clearInterval(btn.timer, window.onscroll = set);            }, 10);    };    function set() {        btn.style.display = (d.scrollTop + b.scrollTop > 100) ? 'block': "none"    }};backTop('goTop');

获得URL中GET参数值// 用法：如果地址是 test.htm?t1=1&t2=2&t3=3, 那么能取得：GET["t1"], GET["t2"], GET["t3"]function get_get(){     querystr = window.location.href.split("?")    if(querystr[1]){        GETs = querystr[1].split("&");        GET = [];        for(i=0;i<GETs.length;i++){              tmp_arr = GETs.split("=")              key=tmp_arr[0]              GET[key] = tmp_arr[1]        }    }    return querystr[1];}

打开一个窗体通用方法function openWindow(url,windowName,width,height){    var x = parseInt(screen.width / 2.0) - (width / 2.0);     var y = parseInt(screen.height / 2.0) - (height / 2.0);    var isMSIE= (navigator.appName == "Microsoft Internet Explorer");    if (isMSIE) {        var p = "resizable=1,location=no,scrollbars=no,width=";        p = p+width;           p = p+",height=";           p = p+height;        p = p+",left=";        p = p+x;        p = p+",top=";        p = p+y;        retval = window.open(url, windowName, p);    } else {        var win = window.open(url, "ZyiisPopup", "top=" + y + ",left=" + x + ",scrollbars=" + scrollbars + ",dialog=yes,modal=yes,width=" + width + ",height=" + height + ",resizable=no" );        eval("try { win.resizeTo(width, height); } catch(e) { }");        win.focus();    }}

提取页面代码中所有网址var aa = document.documentElement.outerHTML.match(/(url\(|src=|href=)[\"\']*([^\"\'\(\)\<\>\[\] ]+)[\"\'\)]*|(http:\/\/[\w\-\.]+[^\"\'\(\)\<\>\[\] ]+)/ig).join("\r\n").replace(/^(src=|href=|url\()[\"\']*|[\"\'\>\) ]*$/igm,"");alert(aa);

清除相同的数组String.prototype.unique=function(){    var x=this.split(/[\r\n]+/);    var y='';    for(var i=0;i<x.length;i++){        if(!new RegExp("^"+x.replace(/([^\w])/ig,"\\$1")+"$","igm").test(y)){            y+=x+"\r\n"        }    }    return y};

按字母排序，对每行进行数组排序function SetSort(){    var text=K1.value.split(/[\r\n]/).sort().join("\r\n");//顺序    var test=K1.value.split(/[\r\n]/).sort().reverse().join("\r\n");//反序    K1.value=K1.value!=text?text:test;}字符串反序function IsReverse(text){    return text.split('').reverse().join('');}

清除html代码中的脚本function clear_script(){    K1.value=K1.value.replace(/<script.*?>[\s\S]*?<\/script>|\s+on[a-zA-Z]{3,16}\s?=\s?"[\s\S]*?"|\s+on[a-zA-Z]{3,16}\s?=\s?'[\s\S]*?'|\s+on[a-zA-Z]{3,16}\s?=[^ >]+/ig,"");}

动态执行JavaScript脚本function javascript(){    try{      eval(K1.value);    }catch(e){      alert(e.message);    }}

动态执行VBScript脚本function vbscript(){    try{        var script=document.getElementById("K1").value;        if(script.trim()=="")return;        window.execScript('On Error Resume Next \n'+script+'\n If Err.Number<>0 Then \n MsgBox "请输入正确的VBScript脚本!",48,"脚本错误!" \n End If',"vbscript")    }catch(e){        alert(e.message);    }}

金额大写转换函数function transform(tranvalue) {    try {        var i = 1;        var dw2 = new Array("", "万", "亿"); //大单位        var dw1 = new Array("拾", "佰", "仟"); //小单位        var dw = new Array("零", "壹", "贰", "叁", "肆", "伍", "陆", "柒", "捌", "玖"); //整数部分用        //以下是小写转换成大写显示在合计大写的文本框中             //分离整数与小数        var source = splits(tranvalue);        var num = source[0];        var dig = source[1];        //转换整数部分        var k1 = 0; //计小单位        var k2 = 0; //计大单位        var sum = 0;        var str = "";        var len = source[0].length; //整数的长度        for (i = 1; i <= len; i++) {              var n = source[0].charAt(len - i); //取得某个位数上的数字              var bn = 0;              if (len - i - 1 >= 0) {                bn = source[0].charAt(len - i - 1); //取得某个位数前一位上的数字              }              sum = sum + Number(n);              if (sum != 0) {                str = dw[Number(n)].concat(str); //取得该数字对应的大写数字，并插入到str字符串的前面                if (n == '0') sum = 0;              }              if (len - i - 1 >= 0) { //在数字范围内                if (k1 != 3) { //加小单位                      if (bn != 0) {                        str = dw1[k1].concat(str);                      }                      k1++;                } else { //不加小单位，加大单位                      k1 = 0;                      var temp = str.charAt(0);                      if (temp == "万" || temp == "亿") //若大单位前没有数字则舍去大单位                      str = str.substr(1, str.length - 1);                      str = dw2[k2].concat(str);                      sum = 0;                }              }              if (k1 == 3){ //小单位到千则大单位进一                k2++;              }        }        //转换小数部分        var strdig = "";        if (dig != "") {              var n = dig.charAt(0);              if (n != 0) {                strdig += dw[Number(n)] + "角"; //加数字              }              var n = dig.charAt(1);              if (n != 0) {                strdig += dw[Number(n)] + "分"; //加数字              }        }        str += "元" + strdig;    } catch(e) {        return "0元";    }    return str;}//拆分整数与小数function splits(tranvalue) {    var value = new Array('', '');    temp = tranvalue.split(".");    for (var i = 0; i < temp.length; i++) {        value = temp;    }    return value;}

resize的操作(function(){    var fn = function(){            var w = document.documentElement ? document.documentElement.clientWidth : document.body.clientWidth                    ,r = 1255                    ,b = Element.extend(document.body)                    ,classname = b.className;            if(w < r){                    //当窗体的宽度小于1255的时候执行相应的操作            }else{                    //当窗体的宽度大于1255的时候执行相应的操作            }    }    if(window.addEventListener){            window.addEventListener('resize', function(){ fn(); });    }else if(window.attachEvent){            window.attachEvent('onresize', function(){ fn(); });    }    fn();})();

实现base64解码function base64_decode(data){    var b64 = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";    var o1, o2, o3, h1, h2, h3, h4, bits, i = 0,ac = 0,dec = "",tmp_arr = [];    if (!data) { return data; }    data += '';    do {             h1 = b64.indexOf(data.charAt(i++));            h2 = b64.indexOf(data.charAt(i++));            h3 = b64.indexOf(data.charAt(i++));            h4 = b64.indexOf(data.charAt(i++));            bits = h1 << 18 | h2 << 12 | h3 << 6 | h4;            o1 = bits >> 16 & 0xff;            o2 = bits >> 8 & 0xff;            o3 = bits & 0xff;            if (h3 == 64) {                    tmp_arr[ac++] = String.fromCharCode(o1);            } else if (h4 == 64) {                    tmp_arr[ac++] = String.fromCharCode(o1, o2);            } else {                    tmp_arr[ac++] = String.fromCharCode(o1, o2, o3);            }    } while (i < data.length);    dec = tmp_arr.join('');    dec = utf8_decode(dec);    return dec;}

实现utf8解码function utf8_decode(str_data){    var tmp_arr = [],i = 0,ac = 0,c1 = 0,c2 = 0,c3 = 0;str_data += '';    while (i < str_data.length) {            c1 = str_data.charCodeAt(i);            if (c1 < 128) {                    tmp_arr[ac++] = String.fromCharCode(c1);                    i++;            } else if (c1 > 191 && c1 < 224) {                           c2 = str_data.charCodeAt(i + 1);                    tmp_arr[ac++] = String.fromCharCode(((c1 & 31) << 6) | (c2 & 63));                    i += 2;            } else {                    c2 = str_data.charCodeAt(i + 1);                    c3 = str_data.charCodeAt(i + 2);                    tmp_arr[ac++] = String.fromCharCode(((c1 & 15) << 12) | ((c2 & 63) << 6) | (c3 & 63));                    i += 3;            }    }     return tmp_arr.join('');}

获取窗体可见范围的宽与高function getViewSize(){    var de=document.documentElement;    var db=document.body;    var viewW=de.clientWidth==0 ?  db.clientWidth : de.clientWidth;    var viewH=de.clientHeight==0 ?  db.clientHeight : de.clientHeight;    return Array(viewW ,viewH);}

断鼠标是否移出事件function isMouseOut(e, handler) {    if (e.type !== 'mouseout') {            return false;    }    var reltg = e.relatedTarget ? e.relatedTarget : e.type === 'mouseout' ? e.toElement : e.fromElement;    while (reltg && reltg !== handler) {            reltg = reltg.parentNode;    }    return (reltg !== handler);}

半角转换为全角函数function ToDBC(str){    var result = '';    for(var i=0; i < str.length; i++){        code = str.charCodeAt(i);        if(code >= 33 && code <= 126){              result += String.fromCharCode(str.charCodeAt(i) + 65248);        }else if (code == 32){              result += String.fromCharCode(str.charCodeAt(i) + 12288 - 32);        }else{              result += str.charAt(i);        }    }    return result;}

全角转换为半角函数function ToCDB(str){    var result = '';    for(var i=0; i < str.length; i++){        code = str.charCodeAt(i);        if(code >= 65281 && code <= 65374){              result += String.fromCharCode(str.charCodeAt(i) - 65248);        }else if (code == 12288){              result += String.fromCharCode(str.charCodeAt(i) - 12288 + 32);        }else{              result += str.charAt(i);        }    }    return result;}

获取当前元素样式：function getStyle(oElm, strCssRule){    var strValue = "";    if(document.defaultView && document.defaultView.getComputedStyle){        strValue = document.defaultView.getComputedStyle(oElm, "").getPropertyValue(strCssRule);    }    else if(oElm.currentStyle){        strCssRule = strCssRule.replace(/\-(\w)/g, function (strMatch, p1){            return p1.toUpperCase();        });        strValue = oElm.currentStyle[strCssRule];    }    return strValue;}

如何使用：例如css代码：/* Element CSS*/div#container{    font: 2em/2.25em Verdana, Geneva, Arial, Helvetica, sans-serif;}JS代码：var elementFontSize = getStyle(document.getElementById("container"), "font-size");————————————

格式化数字，格式化金额：function number_format(number, decimals, dec_point, thousands_sep) {    /*    * 参数说明：    * number：要格式化的数字    * decimals：保留几位小数    * dec_point：小数点符号    * thousands_sep：千分位符号    * */    number = (number + '').replace(/[^0-9+-Ee.]/g, '');    var n = !isFinite(+number) ? 0 : +number,        prec = !isFinite(+decimals) ? 0 : Math.abs(decimals),        sep = (typeof thousands_sep === 'undefined') ? ',' : thousands_sep,        dec = (typeof dec_point === 'undefined') ? '.' : dec_point,        s = '',        toFixedFix = function (n, prec) {            var k = Math.pow(10, prec);            return '' + Math.ceil(n * k) / k;        };    s = (prec ? toFixedFix(n, prec) : '' + Math.round(n)).split('.');    var re = /(-?\d+)(\d{3})/;    while (re.test(s[0])) {        s[0] = s[0].replace(re, "$1" + sep + "$2");    }    if ((s[1] || '').length < prec) {        s[1] = s[1] || '';        s[1] += new Array(prec - s[1].length + 1).join('0');    }    return s.join(dec);}如何使用：var num=number_format(1234567.089, 2, ".", ",");//1,234,567.09